2 * ============LICENSE_START=======================================================
3 * dcaegen2-collectors-veshv
4 * ================================================================================
5 * Copyright (C) 2018 NOKIA
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
20 package org.onap.dcae.collectors.veshv.simulators.dcaeapp.kafka
22 import arrow.effects.IO
23 import org.apache.kafka.clients.consumer.ConsumerConfig
24 import org.apache.kafka.common.serialization.ByteArrayDeserializer
25 import org.onap.dcae.collectors.veshv.utils.logging.Logger
26 import reactor.kafka.receiver.KafkaReceiver
27 import reactor.kafka.receiver.ReceiverOptions
31 * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
34 class KafkaSource(private val receiver: KafkaReceiver<ByteArray, ByteArray>) {
36 fun start(): IO<Consumer> = IO {
37 val consumer = Consumer()
38 receiver.receive().subscribe(consumer::update)
43 private val logger = Logger(KafkaSource::class)
45 fun create(bootstrapServers: String, topics: Set<String>): KafkaSource {
46 val props = HashMap<String, Any>()
47 props[ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG] = bootstrapServers
48 props[ConsumerConfig.CLIENT_ID_CONFIG] = "hv-collector-dcae-app-simulator"
49 props[ConsumerConfig.GROUP_ID_CONFIG] = "hv-collector-simulators"
50 props[ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG] = ByteArrayDeserializer::class.java
51 props[ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG] = ByteArrayDeserializer::class.java
52 props[ConsumerConfig.AUTO_OFFSET_RESET_CONFIG] = "earliest"
53 val receiverOptions = ReceiverOptions.create<ByteArray, ByteArray>(props)
54 .addAssignListener { partitions -> logger.debug { "Partitions assigned $partitions" } }
55 .addRevokeListener { partitions -> logger.debug { "Partitions revoked $partitions" } }
57 return KafkaSource(KafkaReceiver.create(receiverOptions))